The Volta system (or one like it) should easily allow running a motorhome's house AC while driving off engine power. It should also run one AC most of a night from the 13.5 kW-hour battery bank. Running a microwave, coffee maker, or TVs off such a system should also be easy.
Volta Touts ‘Lithium Ion Energy’ for RVs at RVIA | RV Business
“Our half pack contains 13.5Kwh of energy. That’s equivalent to 19 group 31 batteries or 1995Ah,” Johnson noted. “That’s more than a thousand pounds of weight savings and more energy to power comfort and convenience.”
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